enc = "UTF-8";
        assertEquals("UTF-8", encodingHelper.normalize(enc));

        enc = "Shift_JIS";
        assertEquals("Shift_JIS", encodingHelper.normalize(enc));

        enc = "S-JIS";
        assertEquals("Shift_JIS", encodingHelper.normalize(enc));
    }

    public void test_normalize_null() {
        String enc;

        enc = null;
        assertNull(encodingHelper.normalize(enc));

    BaseEncoding enc = base32().withPadChar('~');
    testEncodingWithCasing(enc, "", "");
    testEncodingWithCasing(enc, "f", "MY~~~~~~");
    testEncodingWithCasing(enc, "fo", "MZXQ~~~~");
    testEncodingWithCasing(enc, "foo", "MZXW6~~~");
    testEncodingWithCasing(enc, "foob", "MZXW6YQ~");
    testEncodingWithCasing(enc, "fooba", "MZXW6YTB");
    testEncodingWithCasing(enc, "foobar", "MZXW6YTBOI~~~~~~");
  }

    BaseEncoding enc = base32().withPadChar('~');
    testEncodingWithCasing(enc, "", "");
    testEncodingWithCasing(enc, "f", "MY~~~~~~");
    testEncodingWithCasing(enc, "fo", "MZXQ~~~~");
    testEncodingWithCasing(enc, "foo", "MZXW6~~~");
    testEncodingWithCasing(enc, "foob", "MZXW6YQ~");
    testEncodingWithCasing(enc, "fooba", "MZXW6YTB");
    testEncodingWithCasing(enc, "foobar", "MZXW6YTBOI~~~~~~");
  }

            return URLDecoder.decode(escapedUrl, enc);
        } catch (final Exception e) {
            return url;
        }
    }

    default String getParentEncoding(final String parentUrl, final String sessionId) {
        final String key = sessionId + ":" + parentUrl;
        String enc = parentEncodingMap.get(key);
        if (enc != null) {
            return enc;
        }

./mc cp /tmp/data/encrypted minio1/test-bucket/encrypted --enc-c "minio1/test-bucket/encrypted=${TEST_MINIO_ENC_KEY}" --insecure
./mc cp /tmp/data/defpartsize minio1/test-bucket/defpartsize --enc-c "minio1/test-bucket/defpartsize=${TEST_MINIO_ENC_KEY}" --insecure
./mc put /tmp/data/custpartsize minio1/test-bucket/custpartsize --enc-c "minio1/test-bucket/custpartsize=${TEST_MINIO_ENC_KEY}" --insecure --part-size 50MiB
set +x

echo "Loading objects to source MinIO instance"
./mc cp /tmp/data/plainfile minio1/test-bucket --insecure
./mc cp /tmp/data/encrypted minio1/test-bucket/encrypted --enc-c "minio1/test-bucket/encrypted=${TEST_MINIO_ENC_KEY}" --insecure
./mc cp /tmp/data/defpartsize minio1/test-bucket/defpartsize --enc-c "minio1/test-bucket/defpartsize=${TEST_MINIO_ENC_KEY}" --insecure

# Below should fail as compression and SSEC used at the same time

        int size = 8 + 8 + 32;
        byte[] enc = new byte[size];
        SMBUtil.writeInt4(size, enc, 0);
        SMBUtil.writeInt4(0, enc, 4);
        System.arraycopy(customData, 0, enc, 8, 8);
        System.arraycopy(machineId, 0, enc, 16, 32);
        return enc;
    }

     * @param enc
     *            エンコーディング。{@literal null}や空文字列であってはいけません
     * @return <code>application/x-www-form-urlencoded</code>でエンコード文字列
     */
    public static String encode(final String s, final String enc) {
        assertArgumentNotEmpty("s", s);
        assertArgumentNotEmpty("enc", enc);

        try {
            return URLEncoder.encode(s, enc);

        }
        buf.append("; charset=");
        final String enc;
        if (encoding == null) {
            enc = LaRequestUtil.getOptionalRequest().map(HttpServletRequest::getCharacterEncoding).orElse(Constants.UTF_8);
        } else {
            enc = encoding;
        }
        buf.append(enc);
        final HttpServletResponse response = LaResponseUtil.getResponse();

    protected Map<String, String> encodingMap = new HashMap<>();

    public String normalize(final String enc) {
        if (StringUtil.isBlank(enc)) {
            return defaultEncoding;
        }

        final String newEnc = encodingMap.get(toLowerCase(enc));
        if (StringUtil.isBlank(newEnc)) {
            return enc;
        }
        return newEnc;
    }